139768470 has 128 divisors (see below), whose sum is σ = 395642880. Its totient is φ = 35038080.

The previous prime is 139768451. The next prime is 139768481. The reversal of 139768470 is 74867931.

It is a super-2 number, since 2×139768470² = 39070450412281800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 440752 + ... + 441068.

It is an arithmetic number, because the mean of its divisors is an integer number (3090960).

Almost surely, 2^139768470 is an apocalyptic number.

139768470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139768470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197821440).

139768470 is an abundant number, since it is smaller than the sum of its proper divisors (255874410).

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

139768470 is a wasteful number, since it uses less digits than its factorization.

139768470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 139768470 is about 11822.3715894908. The cubic root of 139768470 is about 518.9630098265.

The spelling of 139768470 in words is "one hundred thirty-nine million, seven hundred sixty-eight thousand, four hundred seventy".