139477430 has 8 divisors (see below), whose sum is σ = 251059392. Its totient is φ = 55790968.

The previous prime is 139477417. The next prime is 139477447. The reversal of 139477430 is 34774931.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6973862 + ... + 6973881.

It is an arithmetic number, because the mean of its divisors is an integer number (31382424).

Almost surely, 2^139477430 is an apocalyptic number.

139477430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139477430 is a deficient number, since it is larger than the sum of its proper divisors (111581962).

139477430 is a wasteful number, since it uses less digits than its factorization.

139477430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13947750.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 139477430 is about 11810.0563080791. The cubic root of 139477430 is about 518.6025471460.

The spelling of 139477430 in words is "one hundred thirty-nine million, four hundred seventy-seven thousand, four hundred thirty".