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139937898 = 2323322983
BaseRepresentation
bin10000101011101…
…00100001101010
3100202022120201010
420111310201222
5241311003043
621515204350
73316311132
oct1025644152
9322276633
10139937898
1171a9a461
123aa466b6
1322cb7cb9
1414829ac2
15c443133
hex857486a

139937898 has 8 divisors (see below), whose sum is σ = 279875808. Its totient is φ = 46645964.

The previous prime is 139937893. The next prime is 139937899. The reversal of 139937898 is 898739931.

It is a sphenic number, since it is the product of 3 distinct primes.

139937898 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139937893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11661486 + ... + 11661497.

It is an arithmetic number, because the mean of its divisors is an integer number (34984476).

Almost surely, 2139937898 is an apocalyptic number.

139937898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139937898 is a wasteful number, since it uses less digits than its factorization.

139937898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23322988.

The product of its digits is 2939328, while the sum is 57.

The square root of 139937898 is about 11829.5349866341. The cubic root of 139937898 is about 519.1726216231.

The spelling of 139937898 in words is "one hundred thirty-nine million, nine hundred thirty-seven thousand, eight hundred ninety-eight".

Divisors: 1 2 3 6 23322983 46645966 69968949 139937898