47165990 has 64 divisors (see below), whose sum is σ = 94385088. Its totient is φ = 16896000.

The previous prime is 47165983. The next prime is 47166001. The reversal of 47165990 is 9956174.

47165990 = 374² + 375² + ... + 578².

It is a super-2 number, since 2×47165990² = 4449261225360200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 466940 + ... + 467040.

It is an arithmetic number, because the mean of its divisors is an integer number (1474767).

Almost surely, 2^47165990 is an apocalyptic number.

47165990 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

47165990 is a wasteful number, since it uses less digits than its factorization.

47165990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 47165990 is about 6867.7499954497. The cubic root of 47165990 is about 361.3069521444.

The spelling of 47165990 in words is "forty-seven million, one hundred sixty-five thousand, nine hundred ninety".