38899770 has 64 divisors (see below), whose sum is σ = 114912000. Its totient is φ = 8206848.

The previous prime is 38899753. The next prime is 38899771. The reversal of 38899770 is 7799883.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38899771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4395 + ... + 9854.

It is an arithmetic number, because the mean of its divisors is an integer number (1795500).

Almost surely, 2^38899770 is an apocalyptic number.

38899770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38899770 is an abundant number, since it is smaller than the sum of its proper divisors (76012230).

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

38899770 is a wasteful number, since it uses less digits than its factorization.

38899770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14279.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 38899770 is about 6236.9680133860. The cubic root of 38899770 is about 338.8303812917.

The spelling of 38899770 in words is "thirty-eight million, eight hundred ninety-nine thousand, seven hundred seventy".